The process in which 2 paramecium join to exchange dna is

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight.which of these is the most likely effect on the ecosystem? a-an increase in biodiversity. b-an increase in immigration to the area. c-a decrease in available water. d-a decrease in plant growth.

Indica el nombre y la fucion de los vasos sanguineos que entran y salen de los riñones

Are salt and soap nutrients or toxins for yeast? explain.